"check_rbl" - Check SMTP black- or white- listing status

       Elan Ruusamäe for the improved parallel support and several fixes

       Victor V Kudlak for parallel support

       Jan Kantert for whitelistings support

perl v5.38.2                                       2024-07-02                                       CHECK_RBL(7)

       Matteo Corti <matteo@corti.li> See AUTHORS for the complete list

       No bugs have been reported.

       Please     report    any    bugs    or    feature    requests    through    the    web    interface    at
       https://github.com/matteocorti/check_rbl/issues

       Options can be specified in an ini file. See https://www.monitoring-plugins.org/doc/extra-opts.html

       check_updates depends on

       •   Capture::Tiny

       •   Data::Validate::Domain

       •   Data::Validate::IP

       •   Getopt::Long

       •   IO::Select

       •   Monitoring::Plugin

       •   Monitoring::Plugin::Threshold

       •   Net::DNS

       •   Readonly

       check_rbl is a Nagios plugin to check SMTP black- or white- listing status

       You can specify multiple --verbose options to increase the program verbosity. --debug can be used to
       display the process and internals of the querying mechanism.

       BECAUSE  THIS  SOFTWARE  IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY FOR THE SOFTWARE, TO THE EXTENT
       PERMITTED BY APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS  AND/OR  OTHER
       PARTIES  PROVIDE  THE  SOFTWARE  "AS  IS"  WITHOUT  WARRANTY  OF  ANY  KIND, EITHER EXPRESSED OR IMPLIED,
       INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND  FITNESS  FOR  A  PARTICULAR
       PURPOSE.  THE  ENTIRE  RISK  AS  TO  THE  QUALITY AND PERFORMANCE OF THE SOFTWARE IS WITH YOU. SHOULD THE
       SOFTWARE PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR, OR CORRECTION.

       IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING WILL ANY COPYRIGHT HOLDER,  OR  ANY
       OTHER  PARTY WHO MAY MODIFY AND/OR REDISTRIBUTE THE SOFTWARE AS PERMITTED BY THE ABOVE LICENCE, BE LIABLE
       TO YOU FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING  OUT  OF
       THE  USE  OR  INABILITY  TO  USE  THE  SOFTWARE  (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING
       RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A FAILURE OF THE SOFTWARE  TO  OPERATE
       WITH  ANY OTHER SOFTWARE), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
       DAMAGES.

         check_rbl -t 30 -H matteocorti.ch -s zen.spamhaus.org -s bl.spamcop.net

       0 if OK, 1 in case of a warning, 2 in case of a critical status and 3 in case of an unknown problem

       None reported.

       Copyright (c) 2009-2022 Matteo Corti <matteo@corti.li>

       Copyright (c) 2009 ETH Zurich.

       Copyright (c) 2010 Elan Ruusamae <glen@delfi.ee>.

       Copyright (c) 2022 Claudio Kuenzler <ck@claudiokuenzler.com>.

       This module is free software; you can redistribute it and/or modify it under the  terms  of  GNU  general
       public license (gpl) version 3.  See the LICENSE file for details.

       "check_rbl" - Check SMTP black- or white- listing status

        -?, --usage
          Print usage information
        -h, --help
          Print detailed help screen
        -V, --version
          Print version information
        --extra-opts=[section][@file]
          Read options from an ini file. See https://www.monitoring-plugins.org/doc/extra-opts.html
          for usage and examples.
        -c, --critical=INTEGER
          Number of blacklisting servers for a critical warning
        -w, --warning=INTEGER
          Number of blacklisting servers for a warning
        -d, --debug
          Prints debugging information
        -U, --url=STRING
          URL to check. Will be ignored if host is set.
        -r, --retry=INTEGER
          Number of times to try a DNS query (default is 4)
        --workers=INTEGER
          Number of parallel checks
        --whitelistings, --wl
          Check whitelistings instead of blacklistings
        --query-timeout=INTEGER
          Timeout of the RBL queries
        -a, --append=STRING
          Append string at the end of the plugin output
        -n, --nameserver=STRING
          Use this nameserver IP as DNS resolver (only one server is supported)
        -t, --timeout=INTEGER
          Seconds before plugin times out (default: 15)
        -v, --verbose
          Show details for command-line debugging (can repeat up to 3 times)

         -H, --host=STRING    SMTP server to check. If hostname is given, it will be resolved to its IP first.
         -s, --server=STRING  RBL server (may be repeated)

       Nagios documentation

       check_rbl -H hostname --server servername [options]

       Version 1.7.0